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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - [CI] igt@gem_exec_suspend@basic-s4-devices - dmesg-warn - list_del corruption, ffffea0004070420->next is LIST_POISON1 (dead000000000100)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106352">bug 106352</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>NOTOURBUG
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - [CI] igt@gem_exec_suspend@basic-s4-devices - dmesg-warn - list_del corruption, ffffea0004070420->next is LIST_POISON1 (dead000000000100)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106352#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - [CI] igt@gem_exec_suspend@basic-s4-devices - dmesg-warn - list_del corruption, ffffea0004070420->next is LIST_POISON1 (dead000000000100)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106352">bug 106352</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>commit 44a182b9d17765514fa2b1cc911e4e65134eef93
Author: Mathias Nyman <<a href="mailto:mathias.nyman@linux.intel.com">mathias.nyman@linux.intel.com</a>>
Date: Thu May 3 17:30:07 2018 +0300
xhci: Fix use-after-free in xhci_free_virt_device
KASAN found a use-after-free in xhci_free_virt_device+0x33b/0x38e
where xhci_free_virt_device() sets slot id to 0 if udev exists:
if (dev->udev && dev->udev->slot_id)
dev->udev->slot_id = 0;
dev->udev will be true even if udev is freed because dev->udev is
not set to NULL.
set dev->udev pointer to NULL in xhci_free_dev()
The original patch went to stable so this fix needs to be applied
there as well.
Fixes: a400efe455f7 ("xhci: zero usb device slot_id member when disabling
and freeing a xhci slot")</pre>
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